[jira] [Commented] (IGNITE-5195) DataStreamer can fails if non-data node enter\leave the grid.

["Dmitriy Setrakyan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-5195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151864#comment-16151864 ] 

Dmitriy Setrakyan commented on IGNITE-5195:
-------------------------------------------

Also, this is the forum thread describing this issue:
http://apache-ignite-users.70518.x6.nabble.com/Failing-DataStreamer-beacuse-of-minor-version-change-td12142.html

*I am surprised that a link to the user thread was not added to the ticket when it was filed. We must always be disciplined to do it.*

Also, it looks like the exception thrown can be ignored (at least according to the responses in the thread). If an exception can be ignored, then it should not be an exception, it should be a warning.

> DataStreamer can fails if non-data node enter\leave the grid.
> -------------------------------------------------------------
>
>                 Key: IGNITE-5195
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5195
>             Project: Ignite
>          Issue Type: Bug
>          Components: streaming
>    Affects Versions: 1.8
>            Reporter: Andrew Mashenkov
>            Assignee: Evgenii Zhuravlev
>            Priority: Minor
>             Fix For: 2.3
>
>         Attachments: DataStreamerFailure.java
>
>
> DataStreamer failed with "too many remaps" message even if non-data node enter\leave topology.
> PFA repro attached. 
> Seems, we should ignore topology changes when non-data node enter\leave the grid. 
> And also we need to sure that remapping doesn't occurs when there is no data nodes in grid any more, as remapping make no sense and more suitable message should be logged.



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